The Collaborative International Dictionary of English v.0.48:

Gambrel \Gam"brel\ v. t.
   To truss or hang up by means of a gambrel. --Beau. & Fl.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gambrel \Gam"brel\, n. [OF. gambe, jambe leg, F. jambe. Cf.
   Cambrel, Chambrel, and see Gambol. n.]
   1. The hind leg of a horse.
      [1913 Webster]

   2. A stick crooked like a horse's hind leg; -- used by
      butchers in suspending slaughtered animals.
      [1913 Webster]

   Gambrel roof (Arch.), a curb roof having the same section
      in all parts, with a lower steeper slope and an upper and
      flatter one, so that each gable is pentagonal in form.
      [1913 Webster]

WordNet (r) 3.0 (2006):

gambrel
    n 1: a gable roof with two slopes on each side and the lower
         slope being steeper [syn: gambrel, gambrel roof]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "gambrel":
   ankle, bayonet legs, bowlegs, calf, cnemis, drumstick, foreleg,
   gamb, gigot, ham, hind leg, hock, jamb, knee, leg, limb, podite,
   popliteal space, scissor-legs, shank, shin, stems, stumps, tarsus,
   trotters